class Clock:
    id = None
    price = None

    def ring(self):
        import winsound
        winsound.Beep(100, 3000)


clock1 = Clock()
clock1.id = '03001'
clock1.price = 16.9
clock1.ring()

clock2 = Clock()
clock2.id = '03002'
clock2.price = 19.9
clock2.ring()
